航天器载荷条件中规定的载荷系数单位是什么？

患者女，33岁，体重51kg，身高161cm，因坠楼致T椎体、双侧胫骨骨折2周入院行切复内固定术。术前伴双下肢不全瘫痪，既往病史无殊，2周前实验室检查正常。术前重要生命体征稳定，仅有心电图T波高尖和右束支传导阻滞改变。在咪唑安定2mg、异丙酚80mg、芬太尼0．2mg、琥珀胆碱100mg诱导下，正常面罩吸氧驱氮、气管插管全身麻醉。在确认气管插管位置正确后，心电图发现QRS波宽大，然后患者心跳突然停止。

提示：积极抢救过程中检查血钾8．3mmol／L。提问：该患者高钾血症的原因可能为？（）

A.肾功能衰竭

B.代谢性酸中毒

C.呼吸性酸中毒

D.截瘫

E.过敏反应

F.与琥珀胆碱有关

人寿保险以外的其他保险，（）年不行使索赔权而消灭。

A.2

B.3

C.4

D.5

颈总动脉（）

A.左侧起于主动脉弓

B.右侧起于头臂干

C.分为颈内动脉、颈外动脉两终支

D.右侧起于主动脉弓

E.左侧起于头臂干

汽车的旋转质量系数与哪些有关？（）

A.飞轮的转动惯量

B.车轮的转动惯量

C.变速箱速比

D.主传动比

"In the long run," as John Maynard Keynes observed, "we are all dead. " True. But can the (1) run be elongated in a way that makes the long run (2) And if so, how, and at what cost People have dreamt of (3) since time immemorial. They have sought it since the first alchemist put an elixir of (4) on the same shopping list as a way to turn lead into gold. They have (5) about it in fiction, from Rider Haggard’s "She" to Frank Herbert’s "Dune". And now, with the growth of (6) knowledge that has marked the past few decades, a few researchers believe it might be within (7) .

To think about the question, it is important to understand why organisms-people (8) -age in the first place. People are like machines: they (9) That much is obvious. However, a machine can always be (10) A good mechanic with a stock of spare parts can keep it going (11) . Eventually, no part of the (12) may remain, but it still carries on, like Lincoln’s famous axe that had three new handles and two new blade.

The question, of course, is whether the machine is worth (13) . It is here that people and nature (14) . Or, to put it slightly (15) , two bits of nature disagree with each other. From the individual’s point of view, (16) is an imperative. You cannot reproduce unless you are alive. A fear of death is a sensible evolved response and, since (17) is a sure way of dying, it is no surprise that people want to stop it in its tracks. Moreover, even the appearance of ageing can be (18) . It (19) the range of potential sexual partners who find you attractive-since it is a sign that you are not going to be (20) all that long to help bring up baby-and thus, again, curbs your reproduction.

16（）

A.living

B.survival

C.death

D.reproduction